Global Patent Index - EP 3505359 A1

EP 3505359 A1 20190703 - COLOR LASER MARKING OF SECURITY DOCUMENT AND A METHOD FOR PRODUCING SUCH SECURITY DOCUMENT

Title (en)

COLOR LASER MARKING OF SECURITY DOCUMENT AND A METHOD FOR PRODUCING SUCH SECURITY DOCUMENT

Title (de)

FARBLASERMARKIERUNG EINES SICHERHEITSDOKUMENTS UND VERFAHREN ZUR HERSTELLUNG SOLCH EINES SICHERHEITSDOKUMENTS

Title (fr)

MARQUAGE LASER COULEUR D'UN DOCUMENT DE SÉCURITÉ ET PROCÉDÉ DE PRODUCTION D'UN TEL DOCUMENT DE SÉCURITÉ

Publication

EP 3505359 A1 20190703 (EN)

Application

EP 17306939 A 20171227

Priority

EP 17306939 A 20171227

Abstract (en)

The present invention relates generally to a data carrier and a method for making the data carrier. More particularly, this invention relates to color laser marking of article, especially security documents. The present invention proposes a security document comprising a multilayers assembly instead of a single color component mixture in a layer. The multilayer assembly comprises at least two laser sensitive layer. Each layer comprises at least one coloring agent component. The order arrangement of the multilayers of bleachable coloring agent component is made so that each layer behaves as a wavelength filter configured to selectively transmit longer wavelengths and block or attenuate shorter wavelengths while protecting the underneath coloring agent component from bleaching interference.

IPC 8 full level

B42D 25/41 (2014.01); B42D 25/23 (2014.01); B42D 25/24 (2014.01); B42D 25/29 (2014.01); B42D 25/351 (2014.01); B42D 25/378 (2014.01); B42D 25/382 (2014.01); B42D 25/387 (2014.01); B42D 25/45 (2014.01)

CPC (source: EP US)

B42D 25/23 (2014.10 - EP); B42D 25/24 (2014.10 - EP); B42D 25/29 (2014.10 - EP); B42D 25/351 (2014.10 - EP US); B42D 25/378 (2014.10 - EP); B42D 25/382 (2014.10 - EP US); B42D 25/387 (2014.10 - EP); B42D 25/41 (2014.10 - EP US); B42D 25/45 (2014.10 - EP US); B42D 25/21 (2014.10 - US); B42D 25/23 (2014.10 - US); B42D 25/24 (2014.10 - US); B42D 25/29 (2014.10 - US)

Citation (applicant)

WO 9635585 A1 19961114 - DSM NV [NL], et al

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3505359 A1 20190703; EP 3732055 A1 20201104; EP 3732055 B1 20230125; US 11084315 B2 20210810; US 2020331284 A1 20201022; WO 2019129527 A1 20190704

DOCDB simple family (application)

EP 17306939 A 20171227; EP 18819116 A 20181217; EP 2018085258 W 20181217; US 201816958267 A 20181217